(0 19 2)(1 20 11 5 3)(4 10 6)(7 12 8)(9 21 18 16 13)(14 17 15)
ALLOWS (11/8)-SEQUENCE
1: (0 2 19)

(0 2 19)(1 20 11 5 3)(4 10 6)(7 12 8)(9 21 18 16 13)(14 17 15)
2: (1 20 11)

(0 2 19)(1 5 3)(4 10 6)(7 12 8)(9 21 18 16 13)(11)(14 17 15)(20)
3: (0 2 19)

(0)(1 5 3)(2)(4 10 6)(7 12 8)(9 21 18 16 13)(11)(14 17 15)(19)(20)
4: (9 21 18)

(0)(1 5 3)(2)(4 10 6)(7 12 8)(9 16 13)(11)(14 17 15)(18)(19)(20)(21)